Mathematics – Probability
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21113422p&link_type=abstract
American Astronomical Society, AAS Meeting #211, #134.22; Bulletin of the American Astronomical Society, Vol. 39, p.971
Mathematics
Probability
2
Scientific paper
A survey of 18 substellar objects in the nearby star forming regions of Taurus, Ophiuchus, and TW Hya has revealed a small number of slightly radial velocity variable systems. These three candidate spectroscopic binaries have radial velocity scatter of only 1.5 - 2.0 km/s compared to the precision of the survey, about 0.5 km/s. However, a clear gap delineates the variable and non-variable populations, similar to that seen in other comparable surveys of Chameleon and Upper Scorpius. Although high-resolution (R 30,000) infrared spectroscopy was used for this survey, more conducive to the detection of faint, red companions than visible light observations, no obvious double-lined systems were identified in the three epochs of data taken for each object. The time elapsed between observations of a particular target ranged from approximately 2 months to 1 year. I discuss the probability that these candidates are indeed spectroscopic binaries and the implications for the period distribution of young, small separation, brown dwarf binaries if they are.
This research is supported by NSF grant AST-0444017 and the NASA Keck PI Data Analysis Fund.
No associations
LandOfFree
How Low-Mass Do Young Spectroscopic Binaries Go? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with How Low-Mass Do Young Spectroscopic Binaries Go?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and How Low-Mass Do Young Spectroscopic Binaries Go? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1482275